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11-19-2009, 02:01 PM | #16 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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It's not the cold temps, per se, that make the difference, its the driving style, the car's T-stat condition etc that is relevant. So,,, lets ask. Was the 1800 mile trip performed in lots of little hops, or was it mostly steady highway miles? Also does the car have a temp gauge? Is it running at a normal temp, or pretty cool? |
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11-19-2009, 02:37 PM | #17 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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Me going to Dallas shouldn't have much effect, and if it did it should have improved my mpg. |
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11-19-2009, 02:41 PM | #18 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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The stat seemed to be lower than I remember it. I remember it usually being slightly below the mid point but this time it wasn't even close... I'm thinking it's part of my problem. Want to check plugs too. Can anyone tell me what a 96 Prizm 1.8l gap should be? |
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11-19-2009, 02:43 PM | #19 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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The money saved by lower rolling resistance on overinflated tires is inconsequential compared to the excess wear caused on your tires - save $5 in fuel to spend $400 on a new set of shoes, not to mention the safety risks. |
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11-19-2009, 02:47 PM | #20 |
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Re: Did tune up and lowered my gas mileage... sweet!
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11-19-2009, 02:50 PM | #21 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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There have been plenty of tests done on traction, mpg and wear that shows benefits to higher psi. Also I understand about car ratings and tire ratings. I lean to the tires, and use there rating for proper footprint, etc. The only info I haven't found much on in the argument is braking. I don't really want to get into this, I think Ford and Firestone got into it and doesn't seem like there is ever going to be one way to think when it comes to the subject. Safety, mpg, wear... can all be argued either way, even blowouts and temp can be argued one way or the other. I'm not a hard core either way, I just lean to the tire ratings. I'd say 80% of people air to what's on the tire not the door jamb so it can't be all that bad. |
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11-19-2009, 02:53 PM | #22 | |
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Re: Did tune up and lowered my gas mileage... sweet!
Someone broke into the car years ago and took the manual and funny enough not the money in the ash tray. I looked under the hood but will look again. They told me at the auto parts store it was .032 but they didn't seem too sure at the time. I'll look at the originals and more online, may have to go to the library and get a chilton's.
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11-19-2009, 03:12 PM | #23 | |
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Re: Did tune up and lowered my gas mileage... sweet!
That sucks you got broken into - some people just suck. My bro had his Honda parked at a mall with some Christmas gifts in the back for his wife/family (this was late December) and some guy figured he'd smash through the window and take all the gifts, and the CD deck. People are so thoughtful! I guess you hope it went to someone who needed it more, but more than likely it funded a bottle of JD's.
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11-19-2009, 04:04 PM | #24 | ||||
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Re: Did tune up and lowered my gas mileage... sweet!
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It's not actually a huge debate at all. There is a right way and a wrong way. Using the tire spec is the wrong way. The only reason to use the tire spec, is to check to make sure the tire can handle the vehicle manufacturer's PSI rating. In the rare instances that the vehicle has a higher spec than the tire, then a different tire must be used. Quote:
The tire manufacturer has no idea what vehicle their tires will be used on, nor the weight and therefore do not attempt to tell you what pressure to run. The pressure on the tire simply tells you the amount of weight (the size of the tire and the PSI are the two determining factors in the amount of weight that it can support, and limited by the quality of the construction) that it can support to make sure that you don't over load it. It is in no way intended to tell you what is safe for your particular vehicle. |
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11-19-2009, 08:49 PM | #25 | |
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Re: Did tune up and lowered my gas mileage... sweet!
What brand of plugs did you install?
OOOOps I see they where NGK's....never mind. The book says the original plug was a standard copper core #BKR5EKB-11 with an .044 gap. NAPA lists the standard and v-power as O.E with a .042 gap. Mitchell also lists the standard NGK with a gap spec of .043. Would it be possible for an improperly gapped and/or V-power plug to have some effect on fuel economy? Where the plugs you took out also v-powers?
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11-19-2009, 09:05 PM | #26 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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11-19-2009, 11:15 PM | #27 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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I do think it's a good idea to match tire speeds, etc with your car but I still think if you aren't as concerned about a soft ride, want better performance, mpg and handling (including traction) and less chance of hydroplaning then higher psi is better (obviously I don't mean extreme). I believe the footprint of any tire will be best as long as it's under the max psi on the tire with the load on the tire, but (serious ?) do tires have a recommended psi for proper footprint? Not trying to argue, I'd like to hear what real dangers there are. I do know a tire will not exploded from pressure at 50psi. Max tire pressures (I've always thought, and either cold or hot there could be such a swing since 10 degrees changes about 1 psi) are for a cold tire, the tire manufactures take into consideration heat from speed and being on the road and it's actually much higher then stated. I think I saw a youtube video of a car tire holding close to 200psi and hear of one getting to 250 before it popped. I'm only saying what is my opinion, you guys might change my mind. I tend to go for the underdog, but I feel like this is another situation where someone made me think outside the box and they made some pretty good points and I went with it. Here's an article I found in 2 seconds looking on google from a Police Sgt. with EVOC (Emergancy Vehicle Operator Course), not the greatest one to use as in an argument, I've read many more scientific, physic related articles but just shows you that there's others thinking the way I am and they've actually done tests. http://www.funbolt.com/articles/toyo...pective-67139/ |
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11-19-2009, 11:18 PM | #28 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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11-20-2009, 07:48 AM | #29 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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http://www.wheels.ca/Tire%20Talk/article/415271 First Paragraph: "There has been much bunk posted on the Internet about how easy it is to save fuel by over-inflating the tires on a vehicle. The people never mention the downside: driver safety." |
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11-20-2009, 02:32 PM | #30 | ||
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Re: Did tune up and lowered my gas mileage... sweet!
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Thanks! |
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